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Iwo Jima vs Polnocny

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Specifications
Iwo Jima Polnocny
Origin 🇺🇸 United States 🇵🇱 Poland
Category Amphibious vessel Amphibious vessel
Type Amphibious assault ship Tank landing ship
Manufacturer Puget Sound Naval Shipyard Stocznia Północna
Year introduced 1961 1967
Number built 7 units 108 units
Estimated unit price NA NA
Displacement 18,474 tons 834 tons
Maximum speed 22.0 knots 18.0 knots
Range 11,000 nm 1,000 nm at 18 knots
Length 180.0 m 73.0 m
Beam 26.0 m 9.6 m
Crew 667 41
Performance Radar Chart
Armament & Systems
Iwo Jima Polnocny
Armament
  • 2 × 2 3-inch (76 mm) / 50-caliber DP guns
  • 8 cell Sea Sparrow BPDMS launchers
  • 2 × Phalanx CIWS
  • Strela 2(SA-N-5) surface-to-air missile system (4 launchers)
  • 30 mm AK-230 air defence gun (2 or 4 twin mounts)
  • 140 mm Ogon 18-barreled rocket launcher(2)
Propulsion 2 × 600 psi (4.1 MPa) boilers, one geared steam turbine, one shaft, 22,000 shaft horsepower (16 MW) 2 Soviet Kolomna 40-D two stroke diesels, 2 shafts, 4,400 bhp

Overview

The Iwo Jima and the Polnocny are both Amphibious vessel classes.

The Iwo Jima displaces 18,474 tons — 22:1 the Polnocny's 834 tons. The Iwo Jima reaches 22 knots vs 18 knots for the Polnocny. Operational range is 11,000 nautical miles for the Iwo Jima vs 1,000 for the Polnocny. The Iwo Jima carries a crew of 667 vs 41 for the Polnocny.

The Iwo Jima was produced in 7 units vs 108 for the Polnocny. The Iwo Jima was commissioned in 1961, 6 years before the Polnocny (1967).

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Frequently Asked Questions

Which has greater displacement, the Iwo Jima-class or Polnocny-class?
The Iwo Jima-class has greater displacement at 18,474 tons compared to the Polnocny-class's 834 tons.
Which is faster, the Iwo Jima-class or Polnocny-class?
The Iwo Jima-class is faster with a maximum speed of 22 knots compared to the Polnocny-class's 18 knots.
Which has longer range, the Iwo Jima-class or Polnocny-class?
The Iwo Jima-class has a longer range at 11,000 nautical miles compared to the Polnocny-class's 1,000 nautical miles.
Which is longer, the Iwo Jima-class or Polnocny-class?
The Iwo Jima-class is longer at 180.0 meters compared to the Polnocny-class's 73.0 meters.
How many crew members do the Iwo Jima-class and Polnocny-class have?
The Iwo Jima-class has a larger crew complement of 667 compared to the Polnocny-class's 41 crew members.
Which has been built in greater numbers, the Iwo Jima-class or Polnocny-class?
The Polnocny-class has been built in greater numbers with 108 vessels compared to 7 vessels of the Iwo Jima-class.